Metal-cutting blowpipe.



v No. 887,467. PATENTED MAY 12, 1 908.

C. DELCAMPE. METAL GUTTINGBLOWPIPE APPLIOATION FILED 0011.9, 1907.v

INVENTOR BY "/im CYRILLE DELCAMPE, OF BRIDGEPORT,- CONNECTICUT. j

METAL-CUTTING BLOWPIPE.

To all whom fit may concern:

Be it known that I, CYmLLE DELCAMPE, a subject of the King of Belgium, residing at Bridgeport, in the county of Fairfield and State of Connecticut, have invented certain newA and useful Improvements in' Metal-CuttingmBlowpipes; and I do hereby declare the 'following to be a. full, clear, and exact description ofi the invention, such as will enable others vskilled in the art to which it appertains .to make and use the same. f

" My invention, particularly relates to pro- Vviding an oxygen-acetylene blow pipe of the j drawings.

type described inA my Patent-No. 874,402, granted December 54, 1907, withv a metal cutting attachment, thiiugh the improveinentsinay be applied'to differing types of' blowfpipe. l l j The nature and mode of operation of .my improvements will be understood from the followingy description and the accompanying A AIn the drawings Figure `l is a view of the complete blow-pipe with cutting attachment parts being shown in section. Fig. 2 is a central section of the blow-pipe head.' Fig. o

is-asectionon the line 3 3 ofFig. 2, looking in the direction. of the arrows.v j

rlhe blow-pipe proper comprises an acetylenepipe A and an oxygen pipe B, the exit end of the. oxygen pipe being arranged within the exit end of `the acetylene pipe which forms the blow-pipe head. Secured to the upper end of the pipe A is an elbow o tei'- minatingin .the cylindrical enlargement l). Theelbow is provided at the turn with an ppeninggthrough which the upper end of the oxygen pipe B passes. Secured to the end of the pipe B with in the cylindrical enlargement ofthe elbow (L is a.A flanged collar c screwthreaded on its inside and outside as shown. The screw-threads on the inside are intended to take ay screw threaded oxygen injector nozzle d and thescrew-threads on the outside are intended to take the cylindrical chimney e provided with the inletori'fices e. These orificesic lare arranged in a. circle and are located iiitliechimney e forward of the exit end of the injector nozzle d and thcindirection is at right angles tothe direction-rd flow of gas from the injector nozzle. By'this arrangement the jets of gas from the holes c converge directly in the path of the oxygen injector nozzle and an intiniz'iteniixture of the gases is secured. vThe orifices (f are, moreover, contractei'l as they approach the Specification of Letters Patent.

Application filed October 9, 1907.

Patented May 12, l1908. serial No. 396,668.

in Fig. 2, for the purpose of givingthe desired y velocity to the acetylene jets Iassing throu hl them and preventing the llas ing back of t ef flame into the chamber outside of` the-chirm'A iiey. Scre\"ve .linto the cylindrical enlarge-4 ment l) of the elbow a is the plugifcontaining'i.. a cylindrical gas chamber o somewhat greater diameter than theehimne e. a The- 65 diameter of this cylindrical cham er is`,re,

duced near the forward end of the jplug to' .f

form a shoulder against whichthe end of the-r. chimney e rests, and thechambjeriszcn-a tinued beyond the shoulder, to formi the relatively contracted mixingchainberff. into theforward ends of which thel main nozzle g i is screwed. The acetylene pipe-A is connected by suit-. I able detachable couplings A y to the pipe Af'rl ruiming through a cylindrical.sheathing The coupling A `is provided `on its inside with a plurality of layers of gauzefas shown, yto

'further prevent back firing,- and the pipe A? terminates inside of tlie' slieat hing Daso plug i having a turn coclti.4 The pipe B connected at the detachablefic'ouj'iling Ato,

the pipe. B2 which also passes'tirough'tli sheathing D and terminates'at 'its'. lower end in the plug Im having a turn cockfm To de,\ 85 tach the pipes A and B .from thehandle Din order to inspect and11'epaii tlie .wire gauze, etc., the detachable couplings Bf and A 'are unscrewed, as will be understood. The pipe B is bent away from the'pipe A but secured 90 in proximity thereto by tieclip` E, the p ip`e`,` being sufficiently resilient to press the front of the end of the chimney cinto contactwithf l. i

the shoulderl within `the pliigf The'cyliIli-Ii` drical sheathing D serves as a handle for @theT blow-pipe. j* j Somuchof the blow 'jiipe'aslias tliusf` r been described is identical 'witlrthat disclosed in my patent abmrehreferretlmtoand? is adapted for use witha seiiisof tlc/tatn j able main nozzles and injector nozzlesso that when it is desired to change the siz'e ofthe. emitted flame it is only necessai both the main nozzle aii llie"iii c and substitute therefor n oz es@ size having the necessary For the purpose of transformings'i'ic j pipe into. a blow-pipe for cutting metal I provide the particu ar coi'istiuction of injector nozzle illustrated herein, in which the injector nozzle d supports centrally, by the vanes n, a small oxygen tube o which extends inside of the chimney, as shown-more clearly y effect of the injector nozzle provided with the heated by the-oxygen acetylene flame and is thus made very active chemically. Since the 4thioug'h'the mixing chamber and the lmain nozzle g u to the extreme tip of t-he main nozzle. is tube 0 is of such size that it allows a flow of oxygen through the injector nozzle into the-mixing chamber and it also provides for a iiow of oxygen directly from the oxygen pipe to the ti of the main nozzle.

, Ind the blow-pipes used y me the oxygen is fed throughthe pipe B at a considerable pressure and the acetylene is also under some pressure, this pressure together with -the injector effect; serving to draw the proper amount-of acetylene into the mixing cliam ber Where it is mixed with the oxygen and.

burned 'at the mouth of the main nozzle. The

Jof the main nozzle y, in an annular ring, -Where it is burned to heat the metal, but the heart of the iiame at -the main nozzle is v i'narke formed by ajet of pure oxygen. This jet of pure oxygen has the known effect of rapidly urnin out the heated metal in athin sharply line, thereby making the cut. By this construction I produce abloW-pi e .for cutting metal which is extremel simp e and has many advantages. Thus,'t e pure ox gen-jet coming from the tube o is strong y tube o terminates at the center of the `main nozzleit is certain that the oxygen jet will strike the metal at' the lacey'herezitismost highly heated by the b oW-pipe flame. Befl cause of the fact that the end of the tube VVo terminates at the mouth of the main nozzle it may be brought extremely closeto the metal to be cut. The oxygen jet thus has no opportunity Avto disbursel and will make an nozzles.

extremely Aneat and regular out. n The blowipe for cutting metal may be uickly transormed into ablowipe for'ot er purposes, 50.

or vice versa, merely y changing the injector Furthermore, l with my improved bloW- ipe aout may be made inany desired direction Without any adjustment of the parts, it being necessary merely to move the low-pipe nozzle in the direction of the de.

sired cut. It Will be understood that the cut'- v ting attachment formed by this modified construction of injector nozzle may be attached to my standard blow-pipes, thus- 'y Witnesses:

transforming them, for the particular Work,

into cutting tools.- It will further be under stood that though'I prefer to use acetylene and Voxygen in my blow-pipes, anyother appropriate combustible gas ma. be'substituted for the acetylene, and any ot er appropriate. vgaseous supporter of combustion for the y,

oxygen.

What I claim is: v l. In a blow-pipe for cutting metal, a supply pipe for a combustible 0'as terminating in a lead containin` a mixin chamber, a detachable main nozzle insaid Iiead forming an outlet fromthe mixing.chanibenJ supply pipe for a gaseoussu porter of come` b'ustion extending -injto said. ead and termijector nozzle in said support and 'discharging intofthe mixing chamber, a tube centrally supported in the injector nozzle and extending to the mouth of the main nozzle for leading anindependent jet of the gaseous su porter of combustion tothe center of t el main nozzle, a chinney surrounding said injector nozzle, and forming a partition between the gas chamber and the mixing substantially as. described.

2. A cutting attachment ,for blow-pipesl adapted'to'mix and burn a-combustible gas and a gaseous' supporter'jof combustion, vcomprising a nozzle'attaclied to the supply nating in a nozzle support, a detachable in i chamber, and 'gas ports in said chimney,

pipe for the gaseous supporter of combiisv tion,A and 4a tube centrally supported in said nozzle and extending to the mouth oi' the main nozzle, for supplying an independent cutting jet of the gaseoussupporter of combustion under pressure to the center of the bloW- ipe flame, substantially as described.

3. n a blow-pipe for cutting metal, a mixing chamber, a main exit nozzle. for said chamber, a sup ly lpipe for a combustiblel gas and a suppy 'pipe for .a gaseous su porter of combustion discharging 'into t e *mixing chamber, and asmall tube supported in the discharge j orifice' of the supply pipe for the gaseoussupporter-of the combustionv and extending to the mouth of the main exit'nozzle, for conducting an independent jet 'of the 'gaseous su porter of combustion under pressure direct y'to the exit mouth,

of the main nozzle' within the ,blow-pipe flame; substantiallyas describetb- -In testimony whereof I afiix mysignature, in presence of two Witnesses. CYRILLE DELCAMPE.

Annali BELjrzER, QR. C. SEELEY. 

